JPS6013573Y2 - Solution-quenched ribbon manufacturing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for producing metal ribbon from molten metal at high speed by a liquid quenching method.

Such devices are mainly used for manufacturing amorphous metals, which are currently being mass-produced.

A known method for manufacturing amorphous metal is to spray molten metal onto a roll rotating at a higher speed than a nozzle, and then rapidly solidify the metal.

This method, called the liquid quenching method, is said to be suitable for the mass production of amorphous metals, but the amorphous metals are produced in extremely thin strips of several tens of microns, and the cooling rate of the molten metal is extremely slow. Due to the necessity of obtaining a large amount of material, the obtained ribbon is ejected from the solution quench roll at an extremely high speed of 20 to 60 m/sec, and since the ejection direction is not constant, the tip is guided to a recovery device such as a winding drum. is extremely difficult.

In order to solve the above-mentioned problems, the ribbon manufacturing device of the present invention utilizes a high-speed flow of liquid to suction guide and forcibly transport the ribbon to a recovery device, which prevents the ribbon from being bent or damaged on the way. It has the feature of being able to guide the ribbon to the collection device reliably and safely without any danger.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The ribbon manufacturing apparatus of the present invention will be described in detail below based on embodiments shown in the drawings.

In FIG. 1, numeral 1 denotes a melting furnace, and a nozzle 2 is provided below.

The molten metal that is continuously injected downward from the nozzle 2 contacts the solution quench roll 3 rotating at high speed and instantly cools and solidifies into a thin ribbon. It is pressed and shaped by the second rotating roll 4 and is injected diagonally downward from between the rolls 3 and 4.

Reference numeral 5 denotes a guide tube with a rectangular cross section for guiding the injection ribbon 6 (see FIG. 2), which is inclined downward at the same angle as the injection angle α of the ribbon 6 with respect to the horizontal line.

The tail end of the guide tube 5 gradually widens outward toward the tube end,
The tube end faces the ribbon injection position of the rolls 3 and 4.

Although not shown, at the ribbon injection positions of the rolls 3 and 4,
In order to peel off the tip of the ribbon 6 from the surface of the roll 3, a scraper such as a gas injection device or a magnetic suction device is provided.

The lower end of the guide tube 5 is connected from the rear at an angle α to the middle of a liquid injection tube 7 provided horizontally below the guide tube 5.

Since the injection tube 7 also serves as a ribbon guide tube, it has the same rectangular cross section as the guide tube 5 (see FIG. 2), is equipped with a liquid supply device 8 at its tail end, and has a tip with a ribbon recovery device 9. Approaching the thin strip approach position.

The guide tube 5 is provided with respect to the injection tube 7 as shown in the figure in order to prevent the liquid from flowing back into the guide tube 5 and to allow the ribbon 6 to smoothly enter the liquid injection tube 7 from the guide tube 5. It is necessary to merge from the rear.

For the same reason, the connection angle (α) of the guide pipe 5 to the injection pipe 7
It is desirable that the injection tube 7 is also small, and for this purpose it is also possible to make the entire injection pipe 7 slope downward.

Although water may be used as the liquid that communicates with the fluid injection pipe 7, oily and highly viscous liquids such as various lubricating oils are more preferable.

The flow velocity is suitably approximately the same as the injection velocity of the ribbon 6 or slightly greater than this.

In this example, the ribbon collecting device 9 employs a rotary drum 10 made of a porous body, and the rotating shaft thereof is set on a horizontal plane with a liquid jet tube 7.
The structure is such that the tip of the injection pipe 7 is located inside the inner circumferential surface of the drum inlet.

The rotary drum 10 made of a porous body may be one in which a large number of round holes are bored in the circumferential surface of the drum as shown in the figure, or a mesh-shaped one, for example.

The circumferential speed of the rotating drum 10 corresponds to the injection speed of the ribbon 6.

The operation of the ribbon manufacturing apparatus having the above configuration is as follows.

Prior to manufacturing the ribbon 6, when a liquid such as lubricating oil is flowed from the liquid supply device 8 to the liquid injection pipe 7 at a high speed equal to the injection speed of the ribbon 6, negative pressure is created inside the guide tube 5. arise.

When the production of the ribbon S is started in this state, the ribbon 6 peeled off from the solution quenching roll 3 and injected from between the rolls 3 and 4 is
It enters the guide tube 5 as if being sucked in and advances inside the tube.

When the tip enters the injection tube 7, the propulsive force of the liquid flow acts on the ribbon 6 and the ribbon 6 is forcibly transferred, but a liquid film is formed between the ribbon 6 and the inner surface of the tube, and the ribbon 6 Since the ribbon 6 is prevented from being rubbed against the inner surface of the tube, the ribbon 6 is prevented from being damaged.

The thin strip 6 guided to the collection device 9 hits the inner circumferential surface of the rotating drum 10, which rotates at the same peripheral speed as the ejection speed of the thin strip 6, from diagonally forward at a shallow angle, and due to the centrifugal force, the inner circumferential surface of the drum is struck. It is pressed and wound inside the drum.

The liquid discharged from the jet tube 7 together with the ribbon 6 is discharged to the outside of the drum, ensuring reliable winding of the ribbon 6.

When the above-mentioned ribbon manufacturing equipment was operated under the following conditions, the tip of the ribbon was reliably guided to the collection device, and there were no defects such as bending, twisting, or tangling in the ribbon, and there were no scratches on the ribbon surface. I never got there.

〔conditions〕

Metal composition (at%) Fe, CO30Zrl.

Molten metal ejection temperature 1200-1300C ejection pressure
1.5 atmospheres (using argon gas) Nozzle material Quartz opening dimensions 0.3 mm W
1500~2500rpm Number of liquid JISK21332 Additive-free turbine oil Flow rate 40~65m/s Ribbon injection speed 40~65m/s Dimensions
20mmW x 5QmL x 40μ As is clear from the above explanation, the ribbon manufacturing apparatus of the present invention introduces the ribbon into the guide tube using negative pressure caused by a high-speed flow of liquid, so the tip of the ribbon enters the guide tube. Even after the tip enters the guide tube, a moderate tensile force is applied to the ribbon, which prevents the ribbon from bending or tangling.

Furthermore, the ribbon traveling through the liquid jet tube is protected from scratches by the liquid within the tube, which has the effect of improving its quality.

Furthermore, as shown in the illustrated example, when a porous rotary drum that winds the ribbon inside is used as the ribbon collection device, the tip of the ribbon is reliably captured by the collection device, and the liquid is captured and collected. This ensures reliable winding.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an example of a ribbon manufacturing apparatus embodying the present invention, and FIG. 2 is a cross-sectional view taken along lines A-A and B-B in FIG. In the figure, 3: Solution quenching roll, 5: Guide tube, 6: Thin ribbon, 7
: Liquid injection pipe, 9: Ribbon collection device, 10: Rotating drum.

Claims (2)

[Scope of utility model registration request] (1) The guide tube 5 for the metal ribbon injected at high speed from the solution quenching roll is connected from the rear midway through the lower liquid injection tube 7, which also serves as the ribbon guide tube, and the tip of the injection tube 7 is used to collect the ribbon. An apparatus for manufacturing a solution quenched ribbon, characterized in that an opening is provided at the ribbon entry position of the apparatus 9. (2) The solution-quenched ribbon manufacturing apparatus according to claim 1, wherein the ribbon collecting device 9 is a porous rotary drum 10 that winds the ribbon inside.